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TypeScript Puzzles
TypeScript is the most popular JavaScript alternative.
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Difficulty
Solved status
Sort: easiest
23. implement LengthOfTuple<T>
TypeScript
easy
94% accepted
31. implement Push<T, I>
TypeScript
easy
90% accepted
3. implement Readonly<T>
TypeScript
easy
86% accepted
25. implement UnwrapPromise<T>
TypeScript
easy
84% accepted
29. implement Shift<T>
TypeScript
easy
84% accepted
9. implement NonNullable<T>
TypeScript
easy
82% accepted
18. implement TupleToUnion<T>
TypeScript
easy
82% accepted
52. implement Split<S, D>
TypeScript
few challengers
82% accepted
39. implement ToNumber<T>
TypeScript
easy
77% accepted
40. implement UnionToIntersection<T>
TypeScript
easy
77% accepted
8. implement Extract<T, U>
TypeScript
easy
77% accepted
21. implement LastItem<T>
TypeScript
easy
76% accepted
55. implement StringToNumber<S>
TypeScript
few challengers
74% accepted
14. implement ThisParameterType<T>
TypeScript
easy
74% accepted
26. implement ReverseTuple<T>
TypeScript
easy
72% accepted
38. implement Add<A, B>
TypeScript
easy
71% accepted
15. implement OmitThisParameter<T>
TypeScript
easy
70% accepted
36. implement LargerThan<A, B>
TypeScript
easy
70% accepted
12. implement ReturnType<T>
TypeScript
easy
70% accepted
34. implement Repeat<T, C>
TypeScript
easy
69% accepted
13. implement InstanceType<T>
TypeScript
easy
68% accepted
1. implement Partial<T>
TypeScript
easy
68% accepted
51. implement Capitalize<T>
TypeScript
easy
66% accepted
45. implement Slice<A, S, E>
TypeScript
easy
65% accepted
53. Implement SnakeCase<S>
TypeScript
few challengers
64% accepted
27. implement Flat<T>
TypeScript
easy
64% accepted
19. implement FirstItem<T>
TypeScript
easy
64% accepted
46. implement Subtract<A, B>
TypeScript
easy
64% accepted
54. Implement CamelCase<S>
TypeScript
easy
63% accepted
7. implement Exclude<T, E>
TypeScript
easy
63% accepted
33. implement TupleToString<T>
TypeScript
easy
63% accepted
32. implement RepeatString<T, C>
TypeScript
easy
62% accepted
16. implement FirstChar<T>
TypeScript
easy
62% accepted
47. implement Multiply<A, B>
TypeScript
few challengers
62% accepted
61. implement Prefix<T, P>
TypeScript
easy
61% accepted
42. implement Equal<A, B>
TypeScript
easy
61% accepted
22. implement StringToTuple<T>
TypeScript
easy
60% accepted
59. implement MapStringUnionToObjectUnion<U>
TypeScript
easy
59% accepted
10. implement Parameters<T>
TypeScript
easy
59% accepted
5. implement Pick<T, K>
TypeScript
easy
58% accepted
43. implement Trim<T>
TypeScript
easy
58% accepted
2. implement Required<T>
TypeScript
easy
56% accepted
49. asserts never
TypeScript
easy
55% accepted
57. implement ObjectPaths<O>
TypeScript
easy
54% accepted
11. implement ConstructorParameters<T>
TypeScript
easy
54% accepted
58. implement Diff<A, B>
TypeScript
easy
53% accepted
24. implement LengthOfString<T>
TypeScript
easy
52% accepted
56. implement Abs<N>
TypeScript
easy
50% accepted
37. implement SmallerThan<A, B>
TypeScript
easy
49% accepted
17. implement LastChar<T>
TypeScript
easy
49% accepted
4. implement Record<K, V>
TypeScript
easy
47% accepted
20: implement IsNever<T>
TypeScript
easy
45% accepted
35. implement Filter<T, A>
TypeScript
easy
44% accepted
30. implement IsAny<T>
TypeScript
easy
43% accepted
50. implement Sort<T>
TypeScript
few challengers
43% accepted
48. implement Divide<A, B>
TypeScript
easy
39% accepted
60. implement UndefinedToNull<T>
TypeScript
easy
39% accepted
44. implement ReplaceAll<S, F, T>
TypeScript
easy
38% accepted
41. implement FindIndex<T, E>
TypeScript
easy
37% accepted
28. implement IsEmptyType<T>
TypeScript
easy
37% accepted
62. implement Unique<T extends any[]>
TypeScript
few challengers
36% accepted
6. implement Omit<T, K>
TypeScript
easy
36% accepted